package main

import (
	"errors"
	"fmt"
	"time"

	"status/check"
	"status/db"
)

type checkTarget struct {
	CheckType   string `json:"type"`
	ServiceName string `json:"name"`
	Target      string `json:"target"`
}

func checkLoop(targets []checkTarget) {
	lastTime := time.Now()
	for {
		if time.Since(lastTime) < time.Minute {
			secondsUntilNextMinute := 60 - time.Now().Second()
			time.Sleep(time.Duration(secondsUntilNextMinute) * time.Second)
			lastTime = time.Now()
		}

		for _, t := range targets {
			currentTime := time.Now()
			var duration time.Duration
			var result check.Result
			var err error

			switch t.CheckType {
			case "http":
				duration, result, err = check.HTTPPing(t.Target)
			case "icmp":
				duration, result, err = check.ICMPPing(t.Target)
			default:
				result = check.Offline
				err = errors.New("unknown check type")
			}

			if err != nil {
				fmt.Printf("[ERROR] Failed checking `%s` with `%s` with error: `%s`", t.Target, t.CheckType, err)
			}

			entry := db.PingEntry{
				ServiceName: t.ServiceName,
				Ping:        duration.Milliseconds(),
				Status:      result,
				Time:        currentTime,
			}
			entry.AddToDB()
		}
	}
}